Nozzle for vacuum cleaners



March 19, 1929.

JuHfconRlcK, 1,705,900

NOZZLE FOR VACUUM CLEANERS 2 Shets-Sheet Filed March 29, 1927 N%\ w J/ I.1 N QNMIH WITNESSES.-

ATT ORNEY Mrch l9, 1929. CODRICK I I 1,705,900

NOZZLE FOR VACUUM CLEANERS Filed March 29, 1927 2 Sheets-Sheet 2WITNESSES: Y INVENTOR:

/ T I, fin If. Cod/rick, 2

. BY v v I ATTORNEY Patented Mar 19, 1929.

UNITED STATES JOHN H. commoner PHILADELPHIA, rENNsYL'vANIA.

NOZZLE FOR VACUUM CLEANERS.

Application filed March 29, 1927. Serial No. 179,245.

My invention relates to vacuuni' cleaners and more particularly to animproved nozzle for such machines.

In operating a vacuum cleaner, it is necessary that the suction nozzlebe disposed approximately in contact with the surface to be cleaned inorder to obtain the maximum elfiusually very difiicult to meet due toinequali- I0 ties in the surfaces being cleaned and difficulties inmaking proper adjustments in the height of the nozzle from the floor.

It has long been recognized that 'a rotatable nozzle which will actuallymake contact with the floor would possess great-advantages over theconventional types of nozzles, and the principal object of my inventionis to provide such a rotatable nozzle. Vacuum cleaners are ordinarilysupporter on wheels disposed at both-the front and back of the bodystructure, and another object of my invention is to so design therotatable noz- .zle that it may be substituted for the front wheels,when it is so desired, and in Qns manner assure that the nozzle isiirrnly pressed against the surface to be cleaned.

Still another object of my invention is to L provide a nozzle which maybe used in a vacuum cleaner by itself, in combination wlth a brush orother nozzles, or in anyother combination that may be desired. heseobjects, and other advantageous ends which will be describedhereinafter, I attain in the following manner, reference beinghad to theaccompanylng drawings in wh'1ch F gure 1 showsa vacuum cleaner in-whi'cha preferred embodiment-0f my invention has been mountedin combinationwithanordinary rotatable cleaning brush; a portion of the nozzlecasingbemg broken. away and the brush and nozzle shown in section inorder. to

illustrate the-relationof my invention to the other parts of the vacuumcleaner.

Figure 2 is an elevation of a preferred form of a rotatable nozzle,partly 'in section,

gigure 3 a section on line 3' 3 on. Figure 2, an

Figure 4 a top plan view of the axle forming a part of my invention.

Referring now more in detail to the drawi gs, the nozzle is providedwith an axle' 5. having a slot 6 extending nearly its entire length butleaving solid portions 7 at each end on which disks 8 are rotatablymounted. Reduced-portions Q'areformed on each end of shaft 5 and adaptedto be secured in the nozzle-casing 10 of a vacuum cleaner 11 and heldagainst rotation in any suitable manner.

Radially disposed vanes 12 are rigidly secured between disks 8 and heldin spaced relation to one another so as to form a wheel 13;

i the space between the inner edges of adjacent vanes being slightlygreater than the width of ciencyof the machine. This requirement is slot6 and the vanes so. disposed that the space between each two adjacentvanes is diametrically opposed to a similar space between two otheradjacent vanes. Axle 5 is preferably made of steel and polished, whilewheel 13 is made of different material so as to reduce the frictionbetween it and axle 5 to a minimum.

It is evident that, as the wheel 13 rotates on shaft 5, the openingsbetween the lowermost vanes and between. the uppermost vanes 12 willalign with slot 6 and form a free passage therethroughso that if suctionis applied to the uppermost pair of vanes, the full effect of suchsuctionwill be transmitted to the surface disposed between the lowermostpair.

In adapting the device to different types of cleaners, differentmountings must be employed but it is necessary that the rotatable nozzlebe mounted in a housing which will prevent any great quantity of airfrompassing between the interior of the housing and the outer edges of vanes12 and, for the purpose of illustration, I have shown the nozzle mountedin a vacuum cleaner in combination with an ordinary rotatable brush. Inthis instance, -I have provided a nozzle housing with a back wall 14 anda partition 15 which are curved to conform to the shape and size of thenozzle so that the nozzle may rotate in this housing with as littleclearance as possible between the outer edges of vanes 12 and theinterior walls .of the housing; the upper portions of back wall 14 andpartition 15 forming a continuation of the air passagein nozzle casing10. The mechanism and mode of operation of vacuum cleaner ll has .notbeen illustratedand described as it is well known intheartand nearlyallof the present types of vacuum cleaners may be adapted to use myimproved nozzle. i

In operation, the brush is rotated in any de sired manner and tends toloosen the dirt in the carpet or rug and to move it toward wheel 13which will draw su'ch dirt into vacuum cleaner 11 as its successivepairs of vanes come in registrywith slot 6. It is evident thatby;pressing thetwo lowermost vanes against the surface to be cleaned, thefull force of the suction fan in the vacuum cleaner is applied to thelimited area between such two vanes, with the result that a morethorough cleaning can be givenvthe surface than is now possible with thesamefamount of power.

While l have described my invention as pended claims. c

Having thus described my invention, what ll claim as new and desire tosecure by Letters Patent-is e j 1. In a vacuum cleaner, a casing, ahorizontal axle mounted" therein, having a substantiallyi verticallongitudinal slot extending therethrough, a disk on each endof the axle,members extending between the disks closely fitting the axle and adaptedto engagethe surface. to be cleaned, a nozzle having its front and rearwalls curved about the axis ofthe axle, and closely embracing themembers extending between the disks.

2. In a vacuum cleaner, a casing, a horiz ontal axle mounted therein,having a substantially vertical longitudinal slot extendingtherethrough, a disk on each end of the axle, circumferentially spacedvanes extending between the disks adapted to engage the surface vto becleaned and having their inner edges inclose proximity to the axle, anda nozzle having its front andv rearwalls curved about the axis of theaxle, and closely embracing the outer edges of the vanes.

,3. In a vacuum cleaner, a casing, a horizontal axle mounted therein,having a substan tially vertical longitudinal slot extendingtherethrough, a disk on each end of the'axle,

oppositely disposed vanes extending between the disks adapted to engagethe surface to be cleanedand having their inner edges in close proximityto the axle, and a nozzle having its front and rear walls curved aboutthe axis of the axle and closely embracing the outer edges of'the vanes,whereby-the oppositely disposedpassages betweenthe vanes willconsecutively communicate with the slot in the axle and consequentlywith the nozzle.

In testimony whereof I have signed my name to this specification.

JOHN H. conalcx

